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EP2216601B1 - Prallschildanordnung - Google Patents

Prallschildanordnung Download PDF

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Publication number
EP2216601B1
EP2216601B1 EP10152664.8A EP10152664A EP2216601B1 EP 2216601 B1 EP2216601 B1 EP 2216601B1 EP 10152664 A EP10152664 A EP 10152664A EP 2216601 B1 EP2216601 B1 EP 2216601B1
Authority
EP
European Patent Office
Prior art keywords
impingement shield
edge
impingement
connection portion
wedge strip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP10152664.8A
Other languages
English (en)
French (fr)
Other versions
EP2216601A2 (de
EP2216601A3 (de
Inventor
Jonathan Dwight Berry
Timur Rustemovich Repikov
Heath Michael Ostebee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Co filed Critical General Electric Co
Publication of EP2216601A2 publication Critical patent/EP2216601A2/de
Publication of EP2216601A3 publication Critical patent/EP2216601A3/de
Application granted granted Critical
Publication of EP2216601B1 publication Critical patent/EP2216601B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/42—Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers
    • F23R3/60—Support structures; Attaching or mounting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/04—Supports for linings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/002—Wall structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
    • F23R2900/00017—Assembling combustion chamber liners or subparts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
    • F23R2900/03044—Impingement cooled combustion chamber walls or subassemblies

Definitions

  • the turbine may include a turbine casing connected to a compressed air supply and including within the turbine casing a plurality of combustors and ducts surrounded by impingement sleeve for delivering hot gas to a turbine stage.
  • the impingement sleeve is secured by welding two portions of the sleeve together utilizing a thin strip of plate (zipper strip) attached by fillet welds.
  • the zipper strip and areas surrounding it may be locations where cracks in the impingement sleeve begin. This may be due to the rigid joint between the two halves of the impingement sleeve at the location of the weld fluxuations in the sleeve shape during normal operation. Such cracks may lead to defects and, accordingly, repairs to the weld whenever they occur. Such repairs, however, are time consuming because, not only may the zipper strip need to be removed, the remnants of weld may have to be ground off of the impingement sleeve itself before a new zipper strip may be used. Further, the utilization of a zipper strip may not allow for the creation of a full penetration butt weld.
  • US 2007/0180828 describes a combustor liner for use in a gas turbine engine, including a heat shield to protect the join line. Parts of the combustor may be joined by welding or a mechanical connector.
  • One embodiment is directed to an impingement shield assembly for a turbine that includes a first impingement shield portion and a second impingement shield portion joined to the first impingement shield portion.
  • the assembly also includes a first connection portion formed on the first impingement shield portion, the first connection portion including a first recess, and a second connection portion formed on the first impingement shield portion, the second connection portion including a second recess.
  • the assembly also includes a first wedge strip portion shaped and configured to mate with the first recess and a second wedge strip portion shaped and configured to mate with the second recess. The first wedge strip portion is welded to the second wedge strip portion.
  • Another embodiment is directed to a method of welding two portions of a turbine impingement shield together.
  • the method of this embodiment includes forming a first connection portion on a first portion of the impingement shield; forming a second connection portion on a second portion of the impingement shield; pressing the first portion and the second portion of the impingement shield towards one another; holding the first portion and the second portion of the impingement shield in a substantially fixed relationship to one another; and while holding: mating a first part of a wedge strip with the first connection portion; mating a second part of a wedge strip with the second connection portion; and welding the first part of the wedge strip to the second part of the wedge weld.
  • FIG. 1 shows an impingement shield assembly according to one embodiment of the present invention.
  • the weld assembly includes a first portion 100 and a second portion 101 that are to be welded together.
  • the first and second portions, 100 and 101 may be any two pieces of material that may need to be welded together.
  • the first and second portions, 100 and 101 are the two halves on an impingement sleeve utilized in a turbine.
  • the first and second portions 100 and 101 may be formed of metal or any other type substance that may withstand welding.
  • Both the first portion 100 and the second portion 101 include a weld base piece 102 attached thereto.
  • both the first portion 100 and the second portion 101 have a weld base piece 102 welded thereto.
  • the weld between the first portion 100 and the weld base piece 102 may be a full penetration butt weld.
  • the weld between the second portion 101 and the base weld piece 102 may also be a full penetration butt weld.
  • the weld base piece 102 includes an interlock portion 103 that extends outwardly from the, for example, first portion 100 when the weld base piece 102 is welded to or otherwise attached thereto. Further details of the interlock portion are discussed below.
  • the assembly shown in FIG. 1 also includes a wedge clamp 104 that holds the weld base pieces 102 attached to the first and second portions 100 and 101 in a substantially constant position relative to one another.
  • the weld base pieces 102 may have some relative movement between them.
  • the wedge clamp 104 is formed by two pieces 104a and 104b that are attached to one another by clamp weld 106.
  • the wedge clamp 104 is constructed such that it includes a portion that interlocks with the interlock portion 103. This interlocking serves to hold the weld base pieces 102 substantially in the same position relative to one another.
  • the two portions of the wedge clamp 104 may collectively be referred to herein as a "wedge strip.”
  • FIG. 2 shows a more detailed view of a base weld piece 102 according to one embodiment of the present invention.
  • the base weld piece 102 includes a base portion 202. Extending up from the base portion 202 is an interlock portion 103.
  • the interlock portion 103 shown in FIG. 2 includes an upward projection 204 that extends upwardly from the base portion 202. In one embodiment, and as shown if FIG. 2 , the upward projection 204 extends from an edge of the base weld piece 103. Of course, the upward projection 204 need not extend from an edge and could be located, for example, in the middle of the base portion 202.
  • the interlock portion 103 also includes an upper portion 206 at a far end away from the base portion 202 of the upward projection 204.
  • the upper portion 206 forms an angle ⁇ with a downward edge 208.
  • the downward edge 208 connects the upper portion 206 with the base portion 202.
  • the angle ⁇ between upper portion 206 and the downward edge is less than 90 degrees.
  • the downward edge 208 is configured to mate with an edge of the wedge clamp 104 ( FIG. 1 ).
  • FIG. 3 shows an example of a one half of a wedge clamp 104 loosely mated with a base weld piece 102.
  • the wedge clamp 104 includes a mating edge 302 designed and configured to mate with the downward edge 208 of the base weld piece 102.
  • the wedge clamp 104 includes a top edge 304 arranged such that angle ⁇ exists between them.
  • the downward edge 302 and the top edge 304 are straight edges. Of course, these edges could be of any shape or configuration as long as they mate with the shape of the base weld piece 102.
  • FIGs. 4a and 4b show an example not covered by the present invention.
  • the first portion 100 and the second portion 101 themselves are formed to include projections 400 and 401, respectively, that curve up and away from the first and second portions 100 and 101 in such a manner as to create a recess 404 for receiving a wedge clamp.
  • This embodiment may require, in the case of an impingement sleeve, rolling an edge of the sleeve back.
  • FIG. 4b shows a wedge clamp 104 (after the two halves thereof have been welded together) mated with the first portion 100 and the second portion 101.
  • FIG. 5 shows a method of forming an impingement shield assembly according to one embodiment of the present invention.
  • connections are formed on the pieces to be joined. As discussed above, this may include either welding a base weld piece to the pieces to be joined or forming the connection pieces from the pieces to joined themselves.
  • the edges of the pieces to be joined are forced or pressed together with hand clamps or weld fixtures.
  • the two portions that make up the wedge clamp 504 ( FIG. 1 ) are placed such that they mate with the connection pieces.
  • the clamp weld pieces are welded together. In one embodiment, this may allow for a full penetration weld and may hold the pieces to be joined in a substantially fixed relationship relative to one another.
  • steps may include first cutting the zipper strip along its length into halves with a cutoff wheel. Then, the welds on each side of the zipper strip may have to be cut. After cutting the welds, the zipper strip may have had to have been chiseled or ground off of the pieces welded together. In some instances, the remnants of the weld may have had to have been ground off from the pieces that were welded together. Finally, some blending or smoothing the blemishes off the pieces so that a new a zipper weld may be placed may also have been required. According the present invention, all that needs to be done is to cut the wedge clamp and remove it. A new wedge clamp may then be affixed as described above and, thereby, greatly reducing downtime and repair time due to any repairs that require removal of the wedge clamp.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Plates (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Laser Beam Processing (AREA)
  • Arc Welding In General (AREA)

Claims (7)

  1. Prallschildanordnung für eine Turbine, die Anordnung umfassend:
    einen ersten Prallschildabschnitt (100);
    einen zweiten Prallschildabschnitt (101), der mit dem ersten Prallschildabschnitt verbunden ist;
    einen ersten Verbindungsabschnitt (102, 103), der auf dem zweiten Prallschildabschnitt ausgebildet ist, wobei der erste Verbindungsabschnitt einen mit dem zweiten Prallschildabschnitt gekoppelten ersten Basisabschnitt (102) und einen sich von dem ersten Basisabschnitt nach außen erstreckenden ersten Verriegelungsabschnitt (103) einschließt, wobei der erste Verriegelungsabschnitt (103) einen ersten oberen Abschnitt (206) und eine erste nach unten gerichtete Kante (208) einschließt, die in einer festen Beziehung zueinander stehen, und wobei der erste obere Abschnitt und die erste nach unten gerichtete Kante eine erste Aussparung definieren; und
    einen zweiten Verbindungsabschnitt (102, 103), der auf dem ersten Prallschildabschnitt ausgebildet ist, wobei der zweite Verbindungsabschnitt einen mit dem ersten Prallschildabschnitt gekoppelten zweiten Basisabschnitt (102) und einen sich von dem zweiten Basisabschnitt nach außen erstreckenden zweiten Verriegelungsabschnitt (103) einschließt, wobei der zweite Verriegelungsabschnitt (103) einen zweiten oberen Abschnitt (206) und eine zweite nach unten gerichtete Kante (208) einschließt, die in einer festen Beziehung zueinander stehen, und wobei der zweite obere Abschnitt und die zweite nach unten gerichtete Kante eine zweite Aussparung definieren;
    einen ersten Klemmstreifenabschnitt (104), der so geformt und konfiguriert ist, dass er mit der ersten Aussparung zusammenpasst, wobei der erste Klemmsreifenabschnitt (104) eine erste Oberkante und eine erste Passkante einschließt, wobei die erste Oberkante und die erste Passkante in einer festen Beziehung zueinander stehen, die eine Umkehrung der festen Beziehung zwischen dem ersten oberen Abschnitt und der ersten nach unten gerichteten Kante ist; und
    einen zweiten Klemmstreifenabschnitt (104), der so geformt und konfiguriert ist, dass er mit der zweiten Aussparung zusammenpasst, wobei der zweite Klemmstreifenabschnitt (104) eine zweite Oberkante und eine zweite Passkante einschließt, wobei die zweite Oberkante und die zweite Passkante in einer festen Beziehung zueinander stehen, die eine Umkehrung der festen Beziehung zwischen dem zweiten oberen Abschnitt und der zweiten nach unten gerichteten Kante ist;
    und wobei der erste Klemmstreifenabschnitt mit dem zweiten Klemmstreifenabschnitt verschweißt ist.
  2. Anordnung nach Anspruch 1, wobei der erste
    Verbindungsabschnitt (102) und der zweite Verbindungsabschnitt (103) fest mit dem Prallschild verbunden sind und von diesem ausgebildet sind.
  3. Anordnung nach Anspruch 1 oder 2, wobei der erste
    Verbindungsabschnitt (102, 103) mit dem ersten Prallschild (100) verschweißt ist und der zweite Verbindungsabschnitt (102, 103) mit dem zweiten
    Prallschildabschnitt (101) verschweißt ist.
  4. Anordnung nach einem der vorhergehenden Ansprüche, wobei die Schweißnaht zwischen dem ersten Klemmstreifenabschnitt und dem zweiten Klemmstreifenabschnitt eine durchgeschweißte Stumpfnaht ist.
  5. Verfahren zum Zusammenschweißen von zwei Abschnitten eines Turbinenprallschilds, das Verfahren umfassend:
    Bilden eines ersten Verbindungungsabschnitts (102, 103) auf einem ersten Abschnitt (100) des Prallschilds durch Verschweißen eines Basisabschnitts des ersten Verbindungsabschnitts mit dem ersten Prallschildabschnitt und wobei der erste Verbindungsabschnitt einen Verriegelungsabschnitt einschließt, der sich von dem Basisabschnitt nach außen erstreckt, wobei der Verriegelungsabschnitt einen oberen Abschnitt und eine nach unten gerichtete Kante einschließt, die eine feste Beziehung zueinander aufweisen;
    Bilden eines zweiten Verbindungsabschnitts (102, 103) auf einem zweiten Abschnitt (101) des Prallschilds;
    Drücken des ersten Abschnitts und des zweiten Abschnitts des Prallschilds aufeinander zu;
    Halten des ersten Abschnitts und des zweiten Abschnitts des Prallschilds in einer im Wesentlichen festen Beziehung zu einander; und
    während des Haltens:
    Zusammenfügen eines ersten Teils eines Klemmstreifens (104) mit dem ersten Verbindungsabschnitt;
    Zusammenfügen eines zweiten Teils eines Klemmstreifens (104) mit dem zweiten Verbindungsabschnitt; und
    Verschweißen des ersten Teils des Klemmstreifens mit dem zweiten Teil des Klemmstreifens;
    wobei der erste Teil des Klemmstreifens eine Oberkante und eine Passkante einschließt, wobei die Oberkante und die Passkante in einer festen Beziehung zueinander stehen, die eine Umkehrung der festen Beziehung zwischen dem oberen Abschnitt und der nach unten gerichteten Kante des ersten Abschnitts ist.
  6. Anordnung nach Anspruch 5, wobei der erste Verbindungsabschnitt und der zweite Verbindungsabschnitt fest mit dem Prallschild verbunden sind und von diesem ausgebildet sind.
  7. Verfahren nach Anspruch 5 oder 6, wobei das Bilden eines zweiten Verbindungsabschnitts (102, 103) auf einem zweiten Abschnitt (101) des Prallschilds umfasst:
    Verschweißen eines Basisabschnitts des zweiten Verbindungsabschnitts mit dem zweiten Prallabschildabschnitt, wobei der zweite Verbindungsabschnitt einen Verriegelungsabschnitt einschließt, der sich von dem Basisabschnitt nach außen erstreckt, wobei der Verriegelungsabschnitt einen oberen Abschnitt und eine nach unten gerichtete Kante einschließt, die eine feste Beziehung zueinander aufweisen.
EP10152664.8A 2009-02-06 2010-02-04 Prallschildanordnung Not-in-force EP2216601B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/366,913 US8191373B2 (en) 2009-02-06 2009-02-06 Interlocking retention strip

Publications (3)

Publication Number Publication Date
EP2216601A2 EP2216601A2 (de) 2010-08-11
EP2216601A3 EP2216601A3 (de) 2017-10-25
EP2216601B1 true EP2216601B1 (de) 2020-04-29

Family

ID=42126429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10152664.8A Not-in-force EP2216601B1 (de) 2009-02-06 2010-02-04 Prallschildanordnung

Country Status (4)

Country Link
US (1) US8191373B2 (de)
EP (1) EP2216601B1 (de)
JP (1) JP5503317B2 (de)
CN (1) CN101839155B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5769407B2 (ja) * 2010-02-01 2015-08-26 三菱重工業株式会社 板金タービンハウジング

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Also Published As

Publication number Publication date
JP5503317B2 (ja) 2014-05-28
JP2010180883A (ja) 2010-08-19
EP2216601A2 (de) 2010-08-11
EP2216601A3 (de) 2017-10-25
US8191373B2 (en) 2012-06-05
CN101839155B (zh) 2015-06-03
US20100199628A1 (en) 2010-08-12
CN101839155A (zh) 2010-09-22

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